Sapphire Radeon HD 7870 XT with Boost 2GB DDR5 HDMI / DVI-I / Dual Mini DP PCI-Express Graphics Card 11199-20-20G 1 x HDMI 2 x Mini-DisplayPort 1 x Dual-Link DVI-I 925/975(Boost) MHz Core Clock 6000 MHz Effective Memory Clock